In network development and operation and maintenance, understanding the IP address corresponding to the domain name is a common and important requirement. Python provides multiple ways to query the IP address of a domain name, and using the socket module is the easiest and straightforward way. This article will introduce how to use Python to query the IP address of a domain name and show some practical examples.
Why query the IP address of the domain name
On the Internet, a domain name (such as ) is a human-readable address, while an IP address (such as 93.184.216.34) is the address used by computers to identify and communicate. Domain name resolution (DNS resolution) is the process of converting a domain name into an IP address. Understanding this process is very important for network debugging, performance optimization and security monitoring.
Use the socket module to query IP addresses
Python's standard library contains a module called socket that provides the ability to access the underlying network interface. We can use the method to query the IP address of the domain name.
Install Python
First, make sure your system has Python installed. You can check with the following command:
python --version
If it has not been installed, you can download and install the latest version of Python from the Python official website.
Query the IP address of a single domain name
Here is a simple example showing how to use the method to query the IP address of a single domain name:
import socket
# Query the IP address of the domain namedomain = ''
ip_address = (domain)
# Output IP addressprint(f"The IP address of {domain} is {ip_address}")
In this example, we query the IP address and print it out. After running this script, you will see an output similar to the following:
The IP address of is 93.184.216.34
Query multiple IP addresses
Some domain names may resolve to multiple IP addresses. We can use the socket.gethostbyname_ex method to get all associated IP addresses:
import socket
# Query all IP addresses of domain namesdomain = ''
host_info = socket.gethostbyname_ex(domain)
ip_addresses = host_info[2]
# Output all IP addressesprint(f"The IP addresses of {domain} are: {ip_addresses}")
This script returns a list of all associated IP addresses and prints them out. For example, after running this script, you may see the following output:
The IP addresses of are: ['142.250.190.14', '142.250.190.15', ...]
Bulk query domain name IP address
If you need to query the IP addresses of multiple domain names, you can encapsulate these operations in a function and use a loop to handle each domain name. Here is an example showing how to batch query the IP addresses of multiple domain names:
import socket
def get_ip_address(domain):
try:
return (domain)
except :
return None
domains = ['', '', '']
for domain in domains:
ip_address = get_ip_address(domain)
if ip_address:
print(f"The IP address of {domain} is {ip_address}")
else:
print(f"Could not resolve {domain}")
In this example, we define a get_ip_address function to handle IP queries for a single domain name and loop through a list of domain names. Run this script and you will see the IP address of each domain name, or the information that failed to resolve.
Speed up batch query using multithreading
When a large number of domain names need to be processed, multithreading can be used to speed up the query process. Here is an example of using a module for multithreaded queries:
import socket
from import ThreadPoolExecutor, as_completed
def get_ip_address(domain):
try:
return (domain)
except :
return None
domains = ['', '', '']
# Use multithreading to handle domain name querywith ThreadPoolExecutor(max_workers=10) as executor:
futures = {(get_ip_address, domain): domain for domain in domains}
for future in as_completed(futures):
domain = futures[future]
try:
ip_address = ()
if ip_address:
print(f"The IP address of {domain} is {ip_address}")
else:
print(f"Could not resolve {domain}")
except Exception as exc:
print(f'{domain} generated an exception: {exc}')
In this example, we use ThreadPoolExecutor to create a thread pool and submit query tasks for each domain name to execute in the thread pool. Using multithreading can significantly improve the efficiency of handling large number of domain name queries.
in conclusion
Through this article, we learned how to use Python to query the IP address of a domain name. From simple single domain query to batch processing and multithreading acceleration, Python provides powerful and flexible tools to meet different needs. Whether it is network debugging, performance optimization, or security monitoring, these tips can help you a lot.
This is the end of this article about the implementation of Python querying the IP address of domain names. For more information about Python querying the IP address of domain names, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!